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104 lines
3.6 KiB
Objective-C
104 lines
3.6 KiB
Objective-C
//
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// CGGeometry+RSKImageCropper.h
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//
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// Copyright (c) 2015 Ruslan Skorb, http://ruslanskorb.com/
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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//
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#import <CoreGraphics/CoreGraphics.h>
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#import <tgmath.h>
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// tgmath functions aren't used on iOS when modules are enabled.
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// Open Radar - http://www.openradar.me/16744288
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// Work around this by redeclaring things here.
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#undef cos
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#define cos(__x) __tg_cos(__tg_promote1((__x))(__x))
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#undef sin
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#define sin(__x) __tg_sin(__tg_promote1((__x))(__x))
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#undef atan2
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#define atan2(__x, __y) __tg_atan2(__tg_promote2((__x), (__y))(__x), \
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__tg_promote2((__x), (__y))(__y))
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#undef pow
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#define pow(__x, __y) __tg_pow(__tg_promote2((__x), (__y))(__x), \
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__tg_promote2((__x), (__y))(__y))
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#undef sqrt
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#define sqrt(__x) __tg_sqrt(__tg_promote1((__x))(__x))
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#undef fabs
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#define fabs(__x) __tg_fabs(__tg_promote1((__x))(__x))
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#undef ceil
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#define ceil(__x) __tg_ceil(__tg_promote1((__x))(__x))
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#undef floor
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#define floor(__x) __tg_floor(__tg_promote1((__x))(__x))
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#undef round
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#define round(__x) __tg_round(__tg_promote1((__x))(__x))
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#ifdef CGFLOAT_IS_DOUBLE
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#define RSK_EPSILON DBL_EPSILON
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#define RSK_MIN DBL_MIN
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#else
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#define RSK_EPSILON FLT_EPSILON
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#define RSK_MIN FLT_MIN
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#endif
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// Line segments.
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struct RSKLineSegment {
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CGPoint start;
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CGPoint end;
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};
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typedef struct RSKLineSegment RSKLineSegment;
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// The "empty" point. This is the point returned when, for example, we
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// intersect two disjoint line segments. Note that the null point is not the
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// same as the zero point.
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CG_EXTERN const CGPoint RSKPointNull;
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// Returns the exact center point of the given rectangle.
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CGPoint RSKRectCenterPoint(CGRect rect);
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// Returns the `rect` scaled around the `point` by `sx` and `sy`.
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CGRect RSKRectScaleAroundPoint(CGRect rect, CGPoint point, CGFloat sx, CGFloat sy);
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// Returns true if `point' is the null point, false otherwise.
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bool RSKPointIsNull(CGPoint point);
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// Returns the `point` rotated around the `pivot` by `angle`.
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CGPoint RSKPointRotateAroundPoint(CGPoint point, CGPoint pivot, CGFloat angle);
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// Returns the distance between two points.
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CGFloat RSKPointDistance(CGPoint p1, CGPoint p2);
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// Make a line segment from two points `start` and `end`.
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RSKLineSegment RSKLineSegmentMake(CGPoint start, CGPoint end);
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// Returns the line segment rotated around the `pivot` by `angle`.
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RSKLineSegment RSKLineSegmentRotateAroundPoint(RSKLineSegment lineSegment, CGPoint pivot, CGFloat angle);
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// Returns the intersection of `ls1' and `ls2'. This may return a null point.
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CGPoint RSKLineSegmentIntersection(RSKLineSegment ls1, RSKLineSegment ls2);
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